Unknown 5411M0251450 R4M1E8 ISA Single Board Computer Card

Industrial ISA Single Board Computer (SBC), designed to act as a standalone embedded PC within a passive backplane system. Model: MSC-251AR-BS5-CH Form Factor: Half-size ISA SBC CPU: AMD 5x86 processor (with heatsink and fan) Chipset: ALi M1542/1543 with AMIBIOS Graphics: CHIPS & TECHNOLOGIES F65550 B (integrated VGA controller) Memory: 72-pin SIMM RAM (installed on the left side) I/O Ports (rear panel): PS/2 mouse, PS/2 keyboard, VGA (DB15), COM1 (DB9), COM2 (header), parallel port (header) Storage Interfaces: IDE (2× 40-pin connectors), Floppy (1× 34-pin connector) Power Connector: 4-pin Molex for onboard power Expansion: Socketed Flash BIOS, headers for KB/MS/LPT/COM Use Case: Embedded systems, machine control, panel PCs, legacy automation Country of Manufacture: Likely Taiwan or Korea (based on components) Compatible Backplanes: Passive ISA backplanes (e.g., BP-206, AP-SL06) Please review pictures carefully and let us know if you have any questions!